Did you know that many American cars already on the road can run on E85 (a mixture of 85 percent ethanol and 15 percent gasoline)? Fueling up with ethanol can help to reduce dependence on foreign oil. Click here to calculate your savings.
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In our December issue, Popular Science names the 100 best innovations of the year: bombproof wallpaper, self-parking cars, the fastest helicopter, and 97 more. Plus inventor profiles and videos.
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